运行hive提示Name node is in safe mode.错误

 1 Logging initialized using configuration in jar:file:/usr/local/hive/lib/hive-common-1.2.2.jar!/hive-log4j.properties
 2 Exception in thread "main" java.lang.RuntimeException: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.server.namenode.SafeModeException): Cannot create directory /tmp/hive. Name node is in safe mode.
 3 Resources are low on NN. Please add or free up more resources then turn off safe mode manually. NOTE:  If you turn off safe mode before adding resources, the NN will immediately return to safe mode. Use "hdfs dfsadmin -safemode leave" to turn safe mode off.
 4     at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkNameNodeSafeMode(FSNamesystem.java:1335)
 5     at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirs(FSNamesystem.java:3866)
 6     at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.mkdirs(NameNodeRpcServer.java:984)
 7     at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.mkdirs(ClientNamenodeProtocolServerSideTranslatorPB.java:634)
 8     at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
 9     at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:616)
10     at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:982)
11     at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2217)
12     at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2213)
13     at java.security.AccessController.doPrivileged(Native Method)
14     at javax.security.auth.Subject.doAs(Subject.java:422)
15     at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1754)
16     at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2213)
17 
18     at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:522)
19     at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:677)
20     at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:621)
21     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
22     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
23     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
24     at java.lang.reflect.Method.invoke(Method.java:498)
25     at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
26     at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
27 Caused by: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.server.namenode.SafeModeException): Cannot create directory /tmp/hive. Name node is in safe mode.
28 Resources are low on NN. Please add or free up more resources then turn off safe mode manually. NOTE:  If you turn off safe mode before adding resources, the NN will immediately return to safe mode. Use "hdfs dfsadmin -safemode leave" to turn safe mode off.
29     at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkNameNodeSafeMode(FSNamesystem.java:1335)
30     at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirs(FSNamesystem.java:3866)
31     at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.mkdirs(NameNodeRpcServer.java:984)
32     at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.mkdirs(ClientNamenodeProtocolServerSideTranslatorPB.java:634)
33     at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
34     at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:616)
35     at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:982)
36     at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2217)
37     at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2213)
38     at java.security.AccessController.doPrivileged(Native Method)
39     at javax.security.auth.Subject.doAs(Subject.java:422)
40     at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1754)
41     at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2213)
42 
43     at org.apache.hadoop.ipc.Client.call(Client.java:1476)
44     at org.apache.hadoop.ipc.Client.call(Client.java:1413)
45     at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229)
46     at com.sun.proxy.$Proxy16.mkdirs(Unknown Source)
47     at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.mkdirs(ClientNamenodeProtocolTranslatorPB.java:563)
48     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
49     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
50     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
51     at java.lang.reflect.Method.invoke(Method.java:498)
52     at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:191)
53     at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
54     at com.sun.proxy.$Proxy17.mkdirs(Unknown Source)
55     at org.apache.hadoop.hdfs.DFSClient.primitiveMkdir(DFSClient.java:3014)
56     at org.apache.hadoop.hdfs.DFSClient.mkdirs(DFSClient.java:2984)
57     at org.apache.hadoop.hdfs.DistributedFileSystem$21.doCall(DistributedFileSystem.java:1047)
58     at org.apache.hadoop.hdfs.DistributedFileSystem$21.doCall(DistributedFileSystem.java:1043)
59     at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
60     at org.apache.hadoop.hdfs.DistributedFileSystem.mkdirsInternal(DistributedFileSystem.java:1061)
61     at org.apache.hadoop.hdfs.DistributedFileSystem.mkdirs(DistributedFileSystem.java:1036)
62     at org.apache.hadoop.hive.ql.exec.Utilities.createDirsWithPermission(Utilities.java:3678)
63     at org.apache.hadoop.hive.ql.session.SessionState.createRootHDFSDir(SessionState.java:597)
64     at org.apache.hadoop.hive.ql.session.SessionState.createSessionDirs(SessionState.java:554)
65     at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:508)
66     ... 8 more

hdfs dfsadmin -safemode leave